package com.example.messagequeue.mqserver.datacenter;

import com.example.messagequeue.commom.MqException;
import com.example.messagequeue.mqserver.core.Binding;
import com.example.messagequeue.mqserver.core.Exchange;
import com.example.messagequeue.mqserver.core.MSGQueue;
import com.example.messagequeue.mqserver.core.Message;

import java.io.IOException;
import java.util.LinkedList;
import java.util.List;

/*
    使用这个类来管理所有硬盘上的数据
    1.数据库：交换机，绑定，队列
    2，数据文件：消息
 */
public class DisDataCenter {
    private DataBaseManager dataBaseManager = new DataBaseManager();
    private MessageFileManager messageFileManager = new MessageFileManager();

    public void init(){
        dataBaseManager.init();
        //messageFileManager.init();
    }

    //封装交换机操作
    public void insertExchange(Exchange exchange){
        dataBaseManager.insertExchange(exchange);
    }

    public void deleteExchange(String exchangeName){
        dataBaseManager.deleteExchange(exchangeName);
    }

    public List<Exchange> selectAllExchanges(){
        return dataBaseManager.selectAllExchanges();
    }

    //封装队列操作
    public void insertQueue(MSGQueue queue) throws IOException {
        dataBaseManager.insertQueue(queue);
        messageFileManager.createQueueFiles(queue.getName());
    }

    public void deleteQueue(String queueName) throws IOException {
        dataBaseManager.deleteQueue(queueName);
        messageFileManager.destroyQueueFiles(queueName);
    }

    public List<MSGQueue> selectAllQueues(){
        return dataBaseManager.selectAllQueues();
    }

    //封装绑定操作
    public void insertBinding(Binding binding){
        dataBaseManager.insertBinding(binding);
    }

    public void deleteBinding(Binding binding){
        dataBaseManager.deleteBinding(binding);
    }

    public List<Binding> selectAllBindings(){
        return dataBaseManager.selectAllBindings();
    }

    //封装消息操作
    public void sendMessage(MSGQueue queue, Message message) throws IOException, MqException {
        messageFileManager.sendMessage(queue, message);
    }

    public void deleteMessage(MSGQueue queue, Message message) throws IOException, ClassNotFoundException {
        messageFileManager.deleteMessage(queue, message);
    }

    public LinkedList<Message> loadAllMessage(String queueName) throws IOException, MqException, ClassNotFoundException {
        return messageFileManager.loadAllMessageFromQueue(queueName);
    }


}
